Architectural panel



FIG. 1 is an upper front left perspective view of an architectural panel showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof, the right side elevational view being a mirror image thereof; and,

FIG. 4 is a sectional view taken along line 2-2 of FIG. 2.

The broken lines in the drawings represent portions of the architectural panel that form no part of the claimed design. 

CLAIM We claim the ornamental design for an architectural panel, as shown and described. 